Ditch-plow.



No. 774,260. PATENTED NOV. 8, 1904. J. ROBERTSON.

DITGH PLOW.

APPIIIIGA'IION FILED SEPT. 3, v1903.

N0 MODEL. 2 SHEETS-SHEET 1.

FIG.

No. 774,200. PATENTED NOV. 8, 1904. l

' J. ROBERTSON. I v

DITGH PLOW.

APPLICATION FILED SEPT. 3, 1903.

N0 MODEL. 2 SHEETS-SHEET 2.

r/G. .s i ,v6.4

Him By Patented November 8, 1904.

UNTTED STATES PATENT OEETcE.,

JAMES ROBERTSON, OE MAHENO, NEW ZEALAND.

DlTCH-PLOW.

SPECIFICATION forming part of Letters Patent No. 774,200, dated November8, 1904. Application led September 8, 1903. Serial No. 171,825. (Nomodel.)

To @ZZ 7071.077?, it may concern:

Beit known that I, JAMES ROBERTSON, plowman, of Maraeweka Station,Maheno, Otago, New Zealand, have invented certain new and usefulImprovements in Ditch-Flows, of which the following is a speciiication.

This invention relates to plows of the class used for forming ditchesfor irrigation, drainage, and the like purposes and furrows.

A leading feature is the providing of an elevator and chute for removingthe excavated material.

Other features are the arrangement whereby the draft is from a main beamto which the knives are secured and a top frame or beam supported bywheels and carrying the main beam, with winding mechanism on said topbeam in front and at the rear for the purpose of raising and loweringthe main beam as desired.

The invention consists of these features and of the combination andarrangement of parts, all hereinafter described, and pointed out in theclaims.

In the accompanying drawings the same numbers of reference indicate thesame or similar parts.

Figure 1 is an elevation of the ditch-plow. Fig. 2 is an enlarged viewof the lower part of the knives and elevator. Fig. 3 is a rear view ofthe ditch-plow. Fig. 4 is a front View of the ditch-plow. Fig. 5 is aplan view of the ditch-plow.

The frame of the machine is mountedV onl four wheels 1 2 3 4.. The frontwheels 1 and 3 run on axles 6, each wheel having a separate axle. Thetie-bar 7 of the front frame has a bearing 8 secured to it, throughwhich a pin 9 passes. A cross-bar 10, the ends of which are adapted toslide in the uprights of the frame 5, is provided with a hole in itscenter through which a steadying-pin 11, secured to the main beam12,passes. The knives 13 14 are secured to the main beam 12 and arestrengthened at their lower ends by means of an angle-iron frame 15,which forms a support for the plow-sole 16, which is secured by rivetsor any other suitable means. At the rear end 17 of the plow-sole 16 anelevator 18 is pivoted, inclining upward to the rear of thesprocket-wheel and chain by means of spurwheels 21 21, securedto therear wheels 2 and 4 of the machine. The spur-wheels drive thespur-pinions 22 22. The spindles 23 24, to which the pinions are keyed,are provided with clutches 25 26 for the purpose of putting the elevator18 in or out of gear. Sprocket-wheels 27 28 are secured to thoseportions of the clutches 25 26 that are keyed to the spindles 23 24C andare connected by means of a chain to the sprocket-wheels 29 30, securedto the spindle 31, to which the top roller 32 of the elevator 18 isattached. A chute 33 is pivoted to the top end of the elevator 18 at 34.There is a top frame 35 for the purpose of securing the rear and frontframes together. The main beam 12 is supported at the front end bypulley-blocks 36 and chain 37. The pulley-blocks are secured to the topframe 35. The lower end of the chain 37 passes under another pulley,which is secured to the main beam 12. The said chain returns over one ofthe pulleys 36 and is secured to the winding apparatus 39. A similarapparatus for raising and lowering the back end of the main beam 12 isprovided at 40. The draft being directlyvonto the main beam by means ofthe coupling-chain 41 gives an eiective and steady action to the knivesand sole, from which the material rises up onto the elevator by reasonof the forward y movement of the plow, and the material clingingsufliciently to the moving surface of the elevator by friction is raisedand tipped into the chute, whence it is discharged to one side by reasonof the curved shape of the elevator. By using wire-netting as thesurface of the elevator potatoes and the like may be elevated fromfurrows dug bythe plow.

Having now described my invention, what I claim as new, and desire tosecureby Letters Patent, is t 1. A ditch-'plow comprising substantiallyinverted-U-shaped frames, wheels carried by the ends thereof, ahorizontal frame secured to the top of said frames, a lower framebetween the forks of the inverted-U-shaped frame, a Vcross-bar guided inthe inverted-U- IOO chains passing over said pulleys whereby the lowerframe is supported from the upper frame, means for adjusting said chainsto lower or raise the lower frame, knives Carried by said lower trarne,an elevator extending from the knives rearwardly and upwardly anddriving' means between the upper end of the elevator vand the wheels.substantially as described.

In witness whereof I have hereunto set my hand in presence of twowitnesses.

JAMES ROBERTSON. Vitnesses:

A. J. PARK, J. R. PARK.

